| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] [noun prp] | 36 |
|
| 2 | a [adj] period [prep] [noun prp] | 34 |
|
| 3 | a brief period [prep] [noun prp] | 9 |
|
| 4 | a brief period [prep] [noun prp] | 9 |
|
| 5 | a short period [prep] [noun prp] | 7 |
|
| 6 | a short period [prep] [noun prp] | 7 |
|
| 7 | a [adj] period in [noun prp] | 7 |
|
| 8 | a [adj] period in [noun prp] | 7 |
|
| 9 | a [adj] period for [noun prp] | 5 |
|
| 10 | a [adj] period [prep] march | 5 |
|
| 11 | a [adj] period from [noun prp] | 5 |
|
| 12 | a [adj] period from [noun prp] | 5 |
|
| 13 | a [adj] period for [noun prp] | 5 |
|
